Very odd llListen behavior

 integer chan = 404;
key       owner_id;

//Data
string  title;
string  rules;
integer price;
integer limitmi;
integer limitma;

default
{
    state_entry()
    {
        owner_id = llGetOwner();
        llListen(chan,"",owner_id,"");
    }
    
    listen(integer chan,string name,key id,string cmd)
    {
        if (id == owner_id)
        {
            if (cmd == "stats")
            {
                string long_string =
                (
                    title +
                    rules +
                    " price $L" +
                    (string) price +
                    " min renting time " +
                    (string) limitmi +
                    " days - max renting time " +
                    (string) limitma +
                    " days"
                );
                
                llInstantMessage (owner_id, long_string);                
            }
            
            else if (cmd == "bootup")
            {
                llInstantMessage(llGetOwner(),"Starting config. process");
                llGetNotecardLine("info",1);
            }
        }

        llListenRemove(llListen(chan,"",owner_id,""));
    }
}